Lol at the fence comment... A coyote can go right over your fence, I haven't seen it, but unless it's a 10ft fence, a coyote can get over it... They get over our 6-7 foot walls out here and snatch up little dogs all the time... I can't imagine AZ coyotes being much different from OH coyotes I think your 75# dog and children will be quite fine however... I've never heard of coyotes killing that kinda shit, and if it has happened, it has to be a rare occurrence. I saw a video of a dog fighting off 3 full grown wolves and living to tell the tale, I'm sure coyotes know better than to go after something that much bigger than them... Coyotes are normally little cowards